Abstract: A fluid discharging system 10 includes a discharging device 30 configured to discharge fluid, a pump 20 configured to supply the fluid stored in a reservoir 22 to the discharging device 30, a supply line 40 connecting the discharging device 30 with the pump 20 to allow the fluid to pass therethrough, and a buffer tank 50, disposed at an intermediate location of the supply line 40, and configured to suck and discharge the fluid. The fluid discharging system 10 is capable of continuing supply of the fluid to the discharging device 30 by discharging the fluid from the buffer tank 50 to the supply line 40, while limiting the supply of the fluid from the pump 20 to the discharging device 30. The buffer tank 50 is capable of realizing a pressure acting state and a holding state.

Abstract: A deaeration device includes: a channel forming member that defines an annular channel; an inlet port through which a fluid flows into the annular channel; an outlet port through which the fluid flows out of the annular channel; a partition that partially partitions the annular channel; an actuator that causes at least a part of the channel forming member to rotate relatively to the partition in the circumferential direction of the annular channel, to form a gradient in the pressure of the fluid in the annular channel; and an air vent that opens to the annular channel at a position where the pressure of the fluid is lower than the pressure of the fluid in the outlet port, and that releases the air bubbles contains in the fluid, to outside of the annular channel.

Abstract: A uniaxial eccentric screw pump includes a stator having an insertion hole with an inner peripheral surface being internally threaded, and a rotor including a shaft being externally threaded and placed through the insertion hole in the stator. The stator has the insertion hole being an opening in a cross section, the opening includes a middle area and two end areas, and the middle area has lower contact pressure at least in a middle of the middle area than at two ends of the middle area.

Abstract: A uniaxial eccentric screw pump includes: a stator having an insertion hole with an inner peripheral surface being internally threaded; and a rotor being externally threaded and placed through the insertion hole. In a cross section, the rotor has a cross-sectional center displaceable in a reciprocating manner in a longitudinal direction of the insertion hole between a pair of turn positions along a center line extending in the longitudinal direction during eccentric rotation of the rotor. The rotor comes in contact with the inner peripheral surface of the insertion hole in a lateral direction of the insertion hole. An interference amount between the rotor and the stator includes a first interference amount when the cross-sectional center is at one of the turn positions and a second interference amount when the cross-sectional center is at a central axis. The first interference amount is larger than the second interference amount.

Abstract: A uniaxial eccentric screw pump includes a stator having an insertion hole with an inner peripheral surface being internally threaded, and a rotor including a shaft being externally threaded and placed through the insertion hole in the stator. The stator has the insertion hole being an opening in a cross section, the opening includes a middle area and two end areas, and the middle area has lower contact pressure at least in a middle of the middle area than at two ends of the middle area.

Abstract: A uniaxial eccentric screw pump includes a stator having an insertion hole with an inner peripheral surface being internally threaded, and a rotor including shaft placed through the insertion hole in the stator. The insertion hole is, in a cross section, an opening including a middle area and two end areas. An interference amount between an outer peripheral surface of the rotor and the inner peripheral surface of the insertion hole in the stator is smaller in the middle area than in the two end areas.

Abstract: A uniaxial eccentric screw pump includes: a stator having an insertion hole with an inner peripheral surface being internally threaded; and a rotor being externally threaded and placed through the insertion hole. In a cross section, the rotor has a cross-sectional center displaceable in a reciprocating manner in a longitudinal direction of the insertion hole between a pair of turn positions along a center line extending in the longitudinal direction during eccentric rotation of the rotor. The rotor comes in contact with the inner peripheral surface of the insertion hole in a lateral direction of the insertion hole. An interference amount between the rotor and the stator includes a first interference amount when the cross-sectional center is at one of the turn positions and a second interference amount when the cross-sectional center is at a central axis. The first interference amount is larger than the second interference amount.

Abstract: A uniaxial eccentric screw pump includes: a stator having a through hole 8a whose inner surface is formed in a female screw shape; a rotor that is a male screw shaft body inserted into the through hole of the stator; a plurality of shims that are arranged on a radially outside of the stator in a range from one end to the other end of the stator, are in surface contact with an outer surface of the stator, are capable of compressing the stator by moving radially inward with respect to the stator, and have, on an outer surface, an inclined surface gradually inclined radially inward or outward toward one end; and an adjustment member that is movable in an axial direction with respect to the stator and has a pressing part that can press the inclined surface of each of the shims.

Abstract: One purpose of the present disclosure is to provide a fluid discharging system which is capable of stably supplying fluid to a discharging device while suppressing an increase in an installation space and cost. A fluid discharging system 10 includes a discharging device 30 configured to discharge fluid, a pump 20 configured to supply the fluid stored in a reservoir 22 to the discharging device 30, a supply line 40 connecting the discharging device 30 with the pump 20 to allow the fluid to pass therethrough, and a buffer tank 50, disposed at an intermediate location of the supply line 40, and configured to suck and discharge the fluid. The fluid discharging system 10 is capable of continuing supply of the fluid to the discharging device 30 by discharging the fluid from the buffer tank 50 to the supply line 40, while limiting the supply of the fluid from the pump 20 to the discharging device 30.

Abstract: A uniaxial eccentric screw pump includes: a rotor 1 including a shaft body of a male screw type; a stator 2 having a through hole 2a of a female screw type through which the rotor 1 is inserted; a casing 3 connected to one end side of the stator 2; an end stud 4 connected, to the other end side of the stator 2; and a position adjusting member 5 that adjusts a relative position of the stator 2 with respect to the rotor 1 in an axial direction.

Abstract: A liquid coating apparatus includes a liquid chamber, a diaphragm deformable to change a volume of the liquid chamber, a piezoelectric element that deforms the diaphragm in a thickness direction, a pressurized casing bottom-wall portion between the piezoelectric element and the diaphragm to support the piezoelectric element from a diaphragm side, a fixed casing bottom wall portion that supports an end of the piezoelectric element on a side opposite to the diaphragm, a plunger that extends through the pressurized casing bottom-wall portion and transmits expansion and contraction of the piezoelectric element to the diaphragm, and a coil spring that is between the piezoelectric element and the pressurized casing bottom-wall portion and is supported by the first support portion to apply a compressive force to the piezoelectric element.

Abstract: The fluid feeding system includes a feed channel connected to the discharging device, a pump connected to the feed channel, a valve for blocking a flow of the fluid that flows toward the introduction chamber via the feed channel, and a control device for determining a pressure state on the pump side and carrying out an opening-and-closing control of the valve 70 based on the determination result. The control device carries out the opening-and-closing control in which the valve is made into an open state when the control device determines that a pressure P1 on the pump side reaches a pressure state exceeding a given pressure.

Abstract: The present invention aims to provide a long-life stator and a uniaxial eccentric screw pump provided with the stator, which enable a comparatively extended period of use by preventing damage of the stator due to repeating of attachment and removal to/from the uniaxial eccentric screw pump. A stator 20 includes an outer cylinder 30, and a stator main body 42 having flange-shaped gasket parts 46 and 47. The stator 20 includes fixing areas 24 and 25 to which the gasket parts 46 and 47 and the outer cylinder 30 are adhered. One or both of the outer cylinder 30 and the gasket parts 46 and 47 has a derricking part penetrating or being dented in axial directions X and made into such a shape where at least part of one of the outer cylinder and the gasket parts is fitted into the other.

Abstract: The purpose is to provide a discharge system which can minimize wear of a connecting part of a discharging device and a refilling device which is caused under the influence of particulate matters contained in fluid even if connection and disconnection for refilling the discharging device with the fluid is repeated. A discharge system includes a discharging device capable of discharging the fluid, and a refilling device capable of refilling the discharging device with the fluid. The fluid is suppliable from the refilling device side to the discharging device side by inserting one of a discharge-side coupler provided to the discharging device side and a refill-side coupler provided to the refilling device side into the other to connect the discharging device to the refilling device. A clearance size d formed between the discharge-side coupler and the refill-side coupler is determined based on the particle size distribution of the particulate matters that constitutes the fluid.

Abstract: The present invention aims to provide a long-life stator and a uniaxial eccentric screw pump provided with the stator, which enable a comparatively extended period of use by preventing damage of the stator due to repeating of attachment and removal to/from the uniaxial eccentric screw pump. A stator 20 includes an outer cylinder 30, and a stator main body 42 having flange-shaped gasket parts 46 and 47. The stator 20 includes fixing areas 24 and 25 to which the gasket parts 46 and 47 and the outer cylinder 30 are adhered. One or both of the outer cylinder 30 and the gasket parts 46 and 47 has a derricking part penetrating or being dented in axial directions X and made into such a shape where at least part of one of the outer cylinder and the gasket parts is fitted into the other.

Abstract: The purpose is to provide a discharge system which can minimize wear of a connecting part of a discharging device and a refilling device which is caused under the influence of particulate matters contained in fluid even if connection and disconnection for refilling the discharging device with the fluid is repeated. A discharge system includes a discharging device capable of discharging the fluid, and a refilling device capable of refilling the discharging device with the fluid. The fluid is suppliable from the refilling device side to the discharging device side by inserting one of a discharge-side coupler provided to the discharging device side and a refill-side coupler provided to the refilling device side into the other to connect the discharging device to the refilling device. A clearance size d formed between the discharge-side coupler and the refill-side coupler is determined based on the particle size distribution of the particulate matters that constitutes the fluid.

Abstract: Provided is an accumulator which can surely discharge a collected fluid material in a first-in first-out manner without causing stagnation of the fluid material. The accumulator includes a housing having a temporarily accumulating space configured to change an inner volume thereof in an axial direction. The housing includes a supply port and a discharge port formed at positions spaced apart from each other in the axial direction and communicating with the temporarily accumulating space. The housing also includes a flow passage for uniformly supplying a fluid material into the temporarily accumulating space through the supply port.

Abstract: The present invention comprises: a stator 2 that is cylindrical and has a through hole 10, the through hole 10 in the shape of a female screw and being formed at a certain pitch in the flow direction from an inlet to an outlet; and a rotor 3 that is formed in the shape of a male screw, is inserted into the through hole 10 of the stator 2 to form a transport space 11 with the inner circumferential surface of the through hole, and rotates to move a fluid from the inlet to the outlet through the transport space 11 while being inscribed on the inner circumferential surface. The volume of the transport space 11 is reduced toward the flow direction. This prevents, reliably, the occurrence of bubbles from a fluid at a downstream-side when the fluid is transported through the transport space 11 formed between the stator 2 and the rotor 3.

Abstract: A fluid application system includes: an application apparatus that discharges a fluid to a workpiece; a movement apparatus that moves the application apparatus and the workpiece; and a control apparatus. At the time of adjusting the output of a power source to thereby vary the discharge amount of the fluid from the nozzle by a target variation amount F1, the control apparatus sets the output of the power source to a value beyond a theoretical output N1 of the power source obtained from the target variation amount F1 of the discharge amount, and then sets the output of the power source to the theoretical output N1 such that the change amount of the internal pressure of the nozzle is coincident with an amount P1 by which the internal pressure of the nozzle needs to change, the amount P1 being obtained from the target variation amount F1 of the discharge amount.

Abstract: A uniaxial eccentric screw pump includes: a casing; a stator having one end portion thereof connected to the casing and having an inner peripheral surface which is formed into a female threaded shaped; a rotor configured to be insertable into the stator and formed of a shaft body having a male threaded shape; and an end stud connected to the other end portion of the stator. The stator is configured to be expandable and shrinkable in a radial direction.